baber/WOPTO huggingface dataset:
Patent GB-547735-A (GB)
Title: Improvements in and relating to thermal relays and indicating, regulating and control systems employing such relays
IPC: G05D23/275
Filed: 1941-01-28
Abstract: 547,735. Automatic control, indicating or recording systems; thermal switches. DAVIS, N. R., and SUN-VIC CONTROLS, Ltd. Jan. 28, 1941, No. 1136. [Class 38 (iv)] [Also in Group XXXVII] Temperature &c.-A thermal, snap-action, relay switch 1 having a heating winding 9 in series with a controlling apparatus 2 whereby an intermittent current or current component is supplied and varied in its percentage time of flow in accordance with variations of a quantity such as temperature, has its response setting varied upon response so as to take up its lost motion and substantially eliminates the differential of the relay. The change of setting may be greater than required for this purpose whereupon the relay will intermittently close its contacts in accordance with the value of the controlling quantity, and will operate without differential. Fig. 1 shows an arrangement wherein the temperature of an enclosure heated by an element 18 is maintained constant and a thermostat 2 whereof a contact 23 may move to the right with increase of enclosure temperature. The average energy supplied through the intermittent closure of contacts 22, 23 to a heating winding 9 on the relay 1 is thereby reduced and the element 11 snaps from contact 7 to contact 8 interrupting supply to the heater 18 at a given temperature. To permit the relay to restore this supply immediately the temperature falls a resistance 14 in series with the winding 9 is shortcircuited at contact 8. In a modification the short circuited resistance is in series with the winding 24 heating the thermostat element and in a further modification it is in series with elements 9 and 24. With a suitable value of resistance 14 the differential may be over compensated. Fig. 4 shows a mechanical arrangement wherein a thermal relay element 40 is controlled by biasing spring 52 and a heating winding 47 intermittently energized by a thermal switch 2 under the control of a temperature responsive element 68a operating upon the contact 67. A bi-metallic element 48 providing compensation for changes of ambient temperature is engaged by a pin 49 on an arm 50 carrying an inclined surface 59 so that the position of the element 40 may be changed by a pin 58 engaging this surface. When the relay responds to energize a reversible motor 55 in a direction to correct for a temperature variation which has actuated the element 68a the pin 58 is carried round for a limited distance by a spindle 54 actuated by the motor to cause a lateral movement of the lower end of the element 40 which eliminates the differential of the relay. The motor circuit is additionally controlled by a thermal tuning relay 82 and may actuate a valve controlling fuel supply to a furnace. Specifications 543,328, [Group XXXVIII], and 543,329, [Group XXXVII], are referred to.
Patent GB-1498641-A (GB)
Title: Amplifier circuit
IPC: H04N9/64
Filed: 1975-01-13
Abstract: 1498641 Transistor amplifiers INDESIT INDUSTRIA ELETTRODOMESTICI ITALIANA SpA 13 Jan 1975 [16 Jan 1974] 1294/75 Heading H3T In an amplifier having an output transistor fed from an unstabilized supply a further transistor detects the difference between the unstabilized voltage and a stable voltage and feeds back a compensating signal to the input of the output transistor to maintain its working point constant. In a colour television amplifier, a colour difference signal applied at 1 is amplified by transistor 13 acting as a low pass active filter and further amplified by transistor 18 and fed to output K via a high frequency gain compensating circuit 27, 28, 29. Transistor 18 may also act as a mixer by applying the luminance signal at 2. A voltage proportional to the supply voltage V B  which is unstabilized is sensed by a voltage divider 31, 33 and applied to the base of transistor 32, the emitter of which is connected to a stabilized voltage V A . Line flyback pulses are applied at 3 and the voltage generated during the flyback period on capacitor 36 which depends on the base voltage of transistor 32 is smoothed by filter 39-42 and fed back through amplifier 13 to the base of transistor 18 to keep its working point constant. Gain may be controlled without variation of frequency response by a network 23-27.
Patent GB-1067141-A (GB)
Title: Improvements relating to direct current amplifiers
Inventor: TRENDELL EDWARD GEORGE
IPC: H03F3/36
Filed: 1963-01-11
Abstract: 1,067,141. Valve and transistor amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 13, 1964 [Jan. 11, 1963], No. 1319/63. Headings H3T and H3W. In a direct current amplifier comprising a pair of valves with a resistor 3 common to both cathode circuits, the input being applied to the grid of the valve 1 and the output taken from the anode of the valve 2, a voltage stabilizer 7 is connected in the cathode circuit of the valve 1. This reduces the cathode potential of the valve 2, the grid of which is biased from a potentiometer 5 and allows of the mean potential of the output terminal being made exactly equal to that of the input terminal. The voltage stabilizer 7 may be shunted with a decoupling capacitor. The arrangement may be applied to transistor circuits, in which case the voltage stabilizer 7 may comprise a Zener diode.
Patent GB-382137-A (GB)
Title: Cleaning and polishing mops
IPC: A47L13/252
Filed: 1932-01-16
Abstract: 382,137. Mops; brushes combined with mops. AXTEN, C. J. and LONG, A. T., Homeware Works, Hook Road, Hook, Surrey. Jan. 16, 1932, No. 1381. [Class 19.] A cleaning and polishing mop having two alternative operative faces has a wire frame with converging sides 1, Fig. 1, of hair pin form with the lower limbs bent inwardly to form eyes 2 for attachment to a handle socket 4. The upper limbs are continued to form a U-shaped member 5. A string mop 7, 6, Fig. 2, is applied to the sides 1 and is resiliently held. The frame 5 receives a heart-shaped pad 9 of felt or the like. The pad 9 is reversible. The string mop may be replaced by a brush or pad.
Patent GB-750707-A (GB)
Title: Method and apparatus for mining
IPC: E21B43/285
Filed: 1954-01-18
Abstract: 750,707. Mineral-mining apparatus. SUBMERGED COMBUSTION CO. OF AMERICA, Inc. Jan. 18 1954 [Jan. 21, 1953], No. 1409/54. Class 68(1) Subsurface minerals, e.g. sulphur, which can be modified and brought to the surface by a liquid, are excavated by heating the liquid by a submerged combustion burrier- 1 in a boiler 3 and passing, under pressure, the resultant heated liquid and the combustion gases through a surge drum. 6 and then down an annular passage formed in a casing 9 extending from the ground surface down to the mineral 10 to be mined. The gases escape from said passage into a central passage extending up through the casing 9 at a point above the lowermost opening of the central passage through ports 17 shrouded by a baffle 15, whilst the hot liquid leaves the annular passage through ports 11 to contact and modify the mineral and carry it up the central passage where the gases entering the passage through the ports 11 assist in the lifting of the modified mineral to the surface. Alternative constructions of casing are described. Additional gaseous fluid, and, if desired, part of the recovered modified rnineral, may be fed to the hot liquid and the combustion gases at a point between the boiler and the subsurface mineral.
Patent GB-300428-A (GB)
Title: Improvements in and relating to golf accessories
IPC: A63B57/00
Filed: 1928-01-16
Abstract: 300,428. Smith, C. A. Nov. 29, 1927, [Convention date]. Garters.-A device for carrying golf tees 16 on the person comprises an arm or leg garter of elastic material 5 which passes out from behind through one slit 11 in a wider portion 9 of leather and back again through another slit 11, adjacent which the parts 5, 9 are stitched together. A lining 10 of inextensible material may be provided behind the part 9. Transverse rows 13 of stitching form compartments 14 in the elastic material' 5 in which the tees may be carried. A row of stitching 15 may also be provided around the edge of the portion 9, and complementary fastening members 6, 7 for the garter are also provided.
Patent GB-157742-A (GB)
Title: Improvements in tyre valves or the like
IPC: F16K15/20
Filed: 1921-01-10
Abstract: 157,742. Schrader's Son, Inc., A., (Assignees of Schweinert, bl. C., and Kraft, H. P.). March 24, 1916, [Convention date.]. Drawings to Specification. Coating.-Hollow and tubular articles such as casings for pneumatic tyre valves are rendered rust-proof by subjecting them to the action of zinc or other metallic dust under the influence of heat. The articles are placed with the metallic dust in a. rotating barrel which is heated to a point below the fusing temperature of the metal.
Patent GB-578337-A (GB)
Title: Improvements in or relating to presses for mouldable plastic material
IPC: B30B11/10
Filed: 1944-01-26
Abstract: 578,337. Rotary-table moulding machines. ROMAC INDUSTRIES, Ltd., and BOYCE, R. D. Jan. 26, 1944, No. 1475. [Class 87 (ii)] In a moulding machine, particularly for moulding clay pigeons, comprising a horizontal rotary table containing angularly positioned matrices, the table being rotated step by step beneath a patrix, and means being provided for cooling the matrices and the patrix, the patrix is operated by a fluid pressure cylinder, a valve of which co-operates with means for ensuring the correct location of a matrix beneath the patrix. The table r, Fig. 4, is turned manually by an arm w having a hole x which engages in turn with pins y. The patrix a is depressed by a pneumatic press e, which is controlled by manipulation of an arm which opens the inlet valve (not shown) of the press. A locating pin 11 is connected with the operating lever of the inlet valve, or the operating lever 12 of the outlet valve o (see Fig. 3, not shown) and the patrix can be depressed only when the pin 11 drops into a hole z in the table; if the pin is not so engaged in a hole either the inlet valve will not open or the outlet valve will not close. The lower parts of the matrices v travel in a trough 13, Fig. 2, containing the coolant, which is sprayed against the sides of the moulds and then passes over the baffles 17 and under the baffles 19. The step by step -rotation of the matrices causes the coolant to be partly expelled from the trough after each step. The matrices may have gills on their outer surfaces to assist cooling. Exhaust air from the press may be used for loosening the moulded articles in the matrices. Springs f return the patrix after each depression. A spring-loaded ball 24 which engages with holes 23 in the table may also be used to facilitate the positioning of a matrix beneath the patrix.
Patent GB-1106262-A (GB)
Title: A process for the treatment of silanes
IPC: C07F7/12
Filed: 1966-01-12
Abstract: The hydrogen and chlorine substituents of (a) at least one silane selected from silanes of the general formula RnSiX4- n and RaSiHbClm, where R is monovalent hydrocarbyl or halo-hydrocarbyl, X is hydrogen or chlorine, n is 0-3, a is 0-2 and b and m are integers of at least 1, the sum of a, b and m being 4, are rearranged by contacting a silane reactant comprising (a) with (b) at least one catalyst selected from quaternary ammonium salts of the general formula R14NY and quaternary phosphonium salts of the general formula R14PY where R1 is a monovalent hydrocarbon radical and Y is a halogen atom having a molecular weight greater than fluorine, there being silicon-bonded hydrogen and chlorine in (a). Preferably 0.1 to 5 per cent by weight of catalyst based on the entire reaction medium is employed and the reaction may be effected at 20 DEG  to 160 DEG  C., optionally in the presence of a solvent.
Patent GB-1370731-A (GB)
Title: Record player having an automatic record-positioning mechanism
IPC: G11B17/04
Filed: 1972-01-12
Abstract: 1370731 Gramophone INDUSTRIE A ZANUSSI SpA 12 Jan 1972 [16 Jan 1971] 1518/72 Heading G5R  In a single play gramophone for playing records of different diameter entered through a slot in the gramophone casing, each entered record engages a pair of abutments 36 on a slide, including members 13 and cross-member 14, and also engages a pair of pins 16 on bellcrank levers 15 to pivot the levers, in dependence on record size, whereby pins 17 at the outer end of the levers align with either slot pair 19, 20 or 21; subsequent inward pressure on the record, opposed by spring-loaded drum 36, moves the record and slide to a position in which the pins 17 engage the ends of the selected slot pair, at which position the record centre hole is over the turntable spindle 38. In this position the slide is latched by engagement of a tooth 25 with one of the teeth 24, 34, 44 of the slide member and it and its support 12 are pivoted downward either manually or automatically to position the record on the turntable.  In the lowered position the tooth portion 25 of the latch is engaged by a further latch 32 and the pick-up arm is actuated to play the record, the arm being positioned at the groove start under the control of an operated control member 39, 40 or 41 at the end of a selected slot. When the record has been played the slide and its support can be pivoted upward and as the portion 25 of the latch is held in the lowered position by tooth member 32 the slide is returned to its initial position by the action of spring- loaded drum 36 and cord 35. During the return movement a pin 33 on the slide engages an abutment 37 and restores the latch portion 25 to its initial condition.
Patent GB-705382-A (GB)
Title: Method of manufacturing plastic typewriter keys
IPC: B29C45/16
Filed: 1951-01-23
Abstract: 705,382. Typewriters &c. ROOY. Jan. 23, 1951 [Jan. 24, 1950], No. 1691/51. Class 100 (4). [Also in Group V] Key construction.-A typewriter key comprises a block of thermosetting plastic material of one colour, formed with a head portion and a shank portion, the head portion being perforated according to the contour of the letter or sign which is to appear on the top surface of the key whilst the shank portion is hollowed out and formed with a relatively small lateral channel, these hollow portions and channel being filled with thermoplastic material of another colour, except for a cavity left in the shank portion for receiving the end of the corresponding typewriter key lever. The hollow shank of the thermosetting block 13 is moulded (see Group V) between the wall of a chamber 16, Fig. 1, and a piston 2, and the lateral channel is formed by a side pin 3. The head of the thermosetting block is moulded between the top of the piston 2 and the bottom of a moulding piston 5, the cavity in the bottom of the moulding piston being engraved according to the character required. The moulded block 13 is then placed in a mould for the thermoplastic material, Fig. 4, the block being upside down with its " top " resting on the top surface of a piston 14. In the top of the mould is a piston 12, the lower end of which has the same dimensions as the typewriter key lever for which the key is intended. The different coloured thermoplastic material is then injected through a runner 15 and the lateral channel.
Patent GB-632047-A (GB)
Title: Improvements in trestles
IPC: E04G1/32
Filed: 1948-01-20
Abstract: 632,047. Trestles. SKILKEN, J. Jan. 20, 1948, No. 1769. Convention date, Dec. 26, 1947. [Class 52 (iii)] The divergent legs 12 of a trestle are inserted in head members 15, 16 pivoted on a central link 28 which carries a bolt 34 whereby a spreader plate 29 can be adjusted to force the lower ends of the legs apart so that the head members, which carry tangs, can grip the ledger board 11.
Patent GB-397373-A (GB)
Title: Improvements in corrosion-resisting iron alloys
Filed: 1933-01-19
Abstract: A corrosion-resistant austenitic chromium nickel steel contains 0,1-0,75 per cent of arsenic.  The alloys may contain 0,05-1 per cent of carbon, 0,5-30 per cent of chromium, and 2-40 per cent of nickel, with or without up to 8 per cent of any of the following:-silicon, manganese, molybdenum, tungsten, cobalt, vanadium, copper, titanium, aluminium, and zirconium.
Patent GB-1441737-A (GB)
Title: Photographic silver ion and dye diffusion transfer process
IPC: G03C8/12
Filed: 1973-07-18
Abstract: 1441737 Photographic silver ion and dye diffusion transfer process GAF CORP 18 July 1973 [14 Aug 1972] 1807/75 Divided out of 1440126 Heading G2C During processing of an exposed photo-sensitive element having at least two colour sensitized silver halide emulsion layers each containing a non- diffusible colour coupler which serves to act as a scavenger for oxidized colour developer in the developed areas exposed to actinic light; a colourproviding nucleating layer containing dispersed noble metal or noble metal sulphide particles and a non-diffusible colourless 2-equivalent coupler of the Formula: -X-C<SP>1</SP>-L-B where X is H, SO 3 H or COOH, C<SP>1</SP> is a 5-pyrazolone, phenolic or openchain ketomethylene coupler radical and is substituted in the coupling position with L which is sulphoxy, carboxy, oxy, azo, azoxy, thio or alkylidene and B is a photographically inert organic ballasting radical of such molecular size and configuration to cause the coupler to be non-diffusible adjacent each silver halide layer for generating a positive coloured dye image from the non-diffusible colourless 2-equivalent coupler for transport to a receiving element from the areas adjacent to the unexposed areas in the silver halide layers via oxidation of a p-phenylenediamine colour developer in the presence of silver halide solvent after exposure and negative development, transfer of silver ions to reaction sites in another colourproviding layer than that associated with the particular silver halide emulsion layer is eliminated by (a) limiting the concentration of silver solvent to that amount (e.g. less than 10 g/litre) which will transport the silver ions to the closer or closest adjacent colour-providing nucleating layer but not to any more remote colour-providing nucleating layer, and (b) placing the colour-providing nucleating layer sufficiently close (preferably within 3 microns) to the corrosponding silver halide layer to provide reaction aided silver ion transport by pulling the silver ions while any more remote colour-providing layer for another silver halide emulsion is at a distance (preferably 3-6 microns) beyond its capacity to act as an efficient silver ion sink, there being used for development a colour developer of the Formula:- Y-C o D where Y is H, SO 3 H or COOH and C o D is a p-phenylenediamine derivative radical, the developer acting in conjunction with the non-diffusible colourless 2-equivalent coupler, and X and Y being such that at least one of them is SO 3 H or COOH.
Patent GB-458216-A (GB)
Title: Improvements relating to centrifugal separators
IPC: B04B7/14
Filed: 1936-01-20
Abstract: 458,216. Centrifugal separators. ECREMEUSES MELOTTE SOC. ANON., Remicourt, Liege, Belgimn. Jan. 20, 1936, No. 1862. Convention date, Jan. 19, 1935. [Class 23] A centrifugal separator for milk and the like has liner plates 5 of an inverted conical form ; the lower part of each plate has hollows 7 or folds which are directed towards the axis and are widened or enlarged towards the base. The width of the hollows 7 on the edge 6 of a plate 5 is less than the distance between consecutive hollows and this assists a quick assembly of the plates on the central structure 8. The upper edges of the plates 5 have undulations 14. The milk is supplied to the upper chamber 1 from which it flows through channels 3 into the bowl. Separation occurs between the plates and the skim milk passes over the top of the conical member. 11 from which it is led to the outlet 12 ; the cream passes inwards and then drops to the outlet 13.
Patent GB-958978-A (GB)
Title: Improvements in or relating to junction transistors
Inventor: JONES DAVID DANIEL
IPC: H01L21/00
Filed: 1961-01-17
Abstract: 958,978. Semi-conductor devices. GENERAL ELECTRIC CO. Ltd. Jan. 10, 1962 [Jan. 17, 1961], No. 1972/61. Heading H1K. In a junction transistor comprising a wafer of semi-conductor material 1, of one conductivity type and which is of uniform resistivity except for a layer 2 of relatively low resistivity formed adjacent one major face of the wafer and having emitter 11 and collector 5 regions of opposite conductivity type material extending into the wafer from the faces adjacent and remote from said layer and which are separated by a narrow base region 12, the collector region includes a first portion 9 of relatively large cross-sectional area in planes parallel to the major faces of the wafer and a second portion 6 of relatively small cross-sectional area which extends from said first portion to the layer, the collector electrode 10 being in contact with the first portion over substantially the whole of its area. Wafer 1 of n-type germanium is 40Á thick and has a resistivity of 30 ohm cm., while layer 2 which is formed by diffusing in antimony up to a concentration of 10<SP>17</SP> atoms per c.c. is 7Á thick. An apertured nickel plate 3 acts as the base electrode. The collector region is formed in two stages, the first of which comprises alloying an indium pellet to the wafer at a temperature of 550‹ C., so forming a cylindrical region 6 which penetrates layer 2 to a depth of 0.5Á, and then removing excess indium. An indium disc of much larger diameter than the pellet is then placed on wafer 1 and further alloying is carried out at 450‹ C. to produce a region 9 about 10Ádeep, the surplus indium in this case acting as the collector electrode. An indium pellet 13 is then alloyed to layer 2 at a temperature just below 450‹ C., thus forming the emitter region 11 and leaving a base region 12 having a thickness of 3.5Á The device is encapsulated in a hermeticallysealed envelope (Fig. 5, not shown), which includes a copper portion to which the collector electrode is soldered.
Patent GB-1086831-A (GB)
Title: Improvements in or relating to machine tools
IPC: B23Q15/00
Filed: 1965-01-21
Abstract: 1,086,831. Machine tool details. GEORG FISCHER A.G. Jan. 21, 1965 [Jan. 22, 1964], No. 2803/65. Heading B3T. [Also in Division G1] In a machine tool, e.g. a lathe, a cold cathode relay tube is triggered by the proximity to its starter electrode (6) of a trigger element (2) displaceably connected to a rail (1). In operation, the rail and the relay move relatively to one another. Triggering of the relay may close a switch (8, 8<SP>1</SP>) to start a motor (12) effecting the carriage feed in the lathe. A similar relay may be used to open a switch (24, 24<SP>1</SP>) on completion of the feeding movement.